技术资料 - 河南克鲁德重工有限公司

The hoisting mechanism is the core executive system that enables a crane to perform lifting operations; it consists of a drum assembly, a block and tackle, a gearbox, and a brake. The wheel set, on the other hand, serves as the load-bearing foundation that enables the crane to move. This article, in accordance with the GB/T 3811-2024 standard, systematically analyzes the calculation of drum diameter and wall thickness verification, pulley selection and wear standards, as well as wheel materials and heat treatment processes, providing comprehensive design parameters and…

The crane rail system is the cornerstone of safe operation for overhead cranes; its selection and installation accuracy directly determine the crane’s operational stability, positioning accuracy, and service life. As the load-bearing core, the main girder structure—including its cross-sectional shape, camber, and welding process—also affects the overall performance of the crane. This article systematically analyzes crane systems in accordance with standards such as GB/T 3811-2024 and GB/T 10183-2023…

An explosion-proof crane refers to specialized lifting equipment designed for explosive atmospheres containing flammable gases, vapors, or combustible dust. Its core design principle is to prevent ignition of the surrounding explosive atmosphere during normal operation or in the event of potential ignition sources such as arcs, sparks, or high temperatures. Nuclear-grade overhead cranes, on the other hand, incorporate additional seismic and radiation protection requirements on top of this. This article combines GB/T 3836-2021 and nuclear safety standards…

摘要：天车钢结构防腐。相关安装验收细节可参考安装调试与验收流程。 （Anti-Corrosion for Crane Steel Structure）是确保设备长期安全运行的关键环节。本文系统阐述基于ISO 12944标准的腐蚀等级分类与涂装体系选择，深入分析天车主要噪音源及其频谱特性，提出弹性车轮…

A Detailed Explanation of the Four-Layer Architecture of Crane Control Systems: PLC Selection, Communication Protocols, and Data Flow Design The Crane Control System (Crane Control System) serves as the core technological foundation for achieving automation, remote operation, and intelligence in unmanned cranes. Based on this four-layer architecture, this article systematically explains PLC controller selection strategies, compares communication protocol options across each layer, and outlines a comprehensive design methodology for upstream and downstream data flows as well as safety data flows. I. Four-Layer Architecture…

A Detailed Explanation of Overhead Crane Anti-Sway Control Technology: Input Shaping, Closed-Loop Feedback, and a Comparison of AI Anti-Sway Solutions Overhead crane anti-sway control refers to the technology that uses control algorithms to suppress the back-and-forth swaying of a load during operation, thereby enabling the load to be positioned quickly and stably. The overhead crane-load system is essentially a nonlinear simple pendulum model—the crane’s acceleration induces an oscillation angle, which in turn affects the effective driving force. Without anti-sway control, a fully loaded overhead crane operating at full speed…

The overhead crane digital remote monitoring platform serves as the digital foundation for intelligent operation and maintenance and unmanned management. It uniformly collects operational data from PLCs, variable frequency drives, safety monitoring systems, and AI sensors—including lifting capacity, travel distance, speed, current, temperature, vibration, and fault codes—which is then aggregated and filtered via an edge gateway before being uploaded to the cloud platform. The cloud platform enables remote equipment monitoring, multi-level alarm notifications, and OEE (Overall Equipment…

The overhead crane’s variable-frequency speed control system uses VVVF (Variable Voltage, Variable Frequency Vector Control) technology to drive the asynchronous motors of the three mechanisms—hoist, main girder, and trolley—enabling stepless speed control from 0 to rated speed and positioning accuracy of ±2 mm. The system consists of an AFE (Active Front-End) rectifier and energy recovery unit, a common DC bus, and three drive inverters for the hoisting, main-girder, and trolley mechanisms. The AFE unit feeds regenerated energy back into the grid (achieving energy savings of 20%–35%) while maintaining a power factor of…

Metallurgical foundry cranes (YG/YZ series) are heavy-duty lifting devices with a duty class of A7–A8 and a lifting capacity of 50–400 metric tons. They are continuously exposed to intense radiant heat in the vicinity of ladles, furnaces, and continuous casting machines. The surface temperature of the main girder’s lower flange plate can reach 300–500 °C, the bottom of the trolley frame can reach 100–200 °C, and the temperature inside the electrical control cabinet can reach 60–80 °C. The high-temperature-resistant design includes heat shields (to block radiant heat exceeding 80%), forced air cooling, and water cooling...

"Crane rail gnawing" refers to the phenomenon of abnormal frictional contact between the flange of a crane wheel and the side of the rail. In mild cases, it accelerates wear on the flange and the rail; in severe cases, it can cause the entire crane to derail and overturn. Track biting is classified by fault source into two major categories: track-side factors (out-of-straightness, uneven joints) and wheel-side factors (horizontal deviation, vertical deviation, diagonal deviation), involving 14 diagnostic parameters. Traditional manual methods relying on auditory and visual inspections are inefficient and difficult to quantify; AI-based acoustic fingerprint recognition and vibration frequency…